package com.example.demo.config;

import com.example.demo.utils.LogUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.TaskExecutor;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author hongjinhui
 */
@Configuration
@Slf4j
public class ExecutorConfig implements AsyncConfigurer {
    @Bean("ApiLog")
    public TaskExecutor taskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // 设置核心线程数
        executor.setCorePoolSize(2);
        // 设置最大线程数
        executor.setMaxPoolSize(5);
        // 设置队列容量
        executor.setQueueCapacity(100);
        // 设置线程活跃时间（秒）
        executor.setKeepAliveSeconds(60);
        // 设置默认线程名称
        executor.setThreadNamePrefix("log-");
        // 设置拒绝策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        // 等待所有任务结束后再关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);
        executor.initialize();
        return executor;
    }

    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return new SpringAsyncExceptionHandler();
    }
    class SpringAsyncExceptionHandler implements AsyncUncaughtExceptionHandler {
        @Override
        public void handleUncaughtException(Throwable throwable, Method method, Object... objects) {
            log.error(
                    "[{}] failed to save operation log.method:{},params:{}. exception message:{},exception cause:{},exception class:{},exception stack:{}",
                    LogUtil.getTaskId(), method, objects, throwable.getMessage(), throwable.getCause(),
                    throwable.getClass(), throwable.getStackTrace());
            LogUtil.removeTaskId();
        }
    }

}

